The wife has approved the LT Header upgrade
After I bolt the LT's on, just redo the VE Tables? The MAF table should not change or will it? Is there a ballpark % to increase the VE for a new starting point?
The wife has approved the LT Header upgrade
After I bolt the LT's on, just redo the VE Tables? The MAF table should not change or will it? Is there a ballpark % to increase the VE for a new starting point?
1999 C5 A-4 Convertible
1 of 245 Nassua Blue 99 Vert's, Blackwing, LS6 Intake, 42 # Injectors, Two Stage Nitrous System- Dry and a Wet Plate, EFI Live Scan/Tune V2, 1999 PCM with 2002 COS 5 OS Custom Nitrous Panel.
Maine USA
Just out of curiosity if you have the chance and patience before you rescale things....if you are still runing LTFTs it would be interesting to see what they think of the LTs now wouldn't it?
That is the question though, is a set of LT's enough to rescale VE and MAF? At this point I would say yes, as you already are taking the high road by investing in EFI Live and a wideband. Unfortuneatly most folks have already done the LTs prior to getting a tuning solution. Keep us posted with your results.
2000 Silverado Full Size 4x4: Forged 6.2, H/C F1R Procharger
98A4 Z28: 02 PCM H/C Forged 347, 9" Moser 3.73
V1 V2 99+up RR COS #5 OLSD Dual Stg N20
www.efialchemy.com
www.greatamericancarwar.com
Who's LT's are you going to use?
We install a ton of Kooks headers with great results. I have also noticed that on a stocker the LTFT's end up being between -8 to -12 % at idle and just off idle and a bit less as rpms pick up.
Howard
Ah Howard,
Just in time with real world results, should have known. Here's to ya in the New Year...To you and yours, Harrison
2000 Silverado Full Size 4x4: Forged 6.2, H/C F1R Procharger
98A4 Z28: 02 PCM H/C Forged 347, 9" Moser 3.73
V1 V2 99+up RR COS #5 OLSD Dual Stg N20
www.efialchemy.com
www.greatamericancarwar.com
Wow, no more driving tonight for me...Two smilie beer toasts in a row!
2000 Silverado Full Size 4x4: Forged 6.2, H/C F1R Procharger
98A4 Z28: 02 PCM H/C Forged 347, 9" Moser 3.73
V1 V2 99+up RR COS #5 OLSD Dual Stg N20
www.efialchemy.com
www.greatamericancarwar.com
Top end - VE and MAF should change. I'd expect a 3~4% increase in fuel needed for the MAF. VE might be a little different.
I have also found that stone stockers, untuned, usually yield AFRS of 11.5-11.9 at WOT. The headers tend to "use" some of that fuel and will report AFR's between 12.1-12.4.
MAF and VE will both have to be altered a bit.
Nice buzz Harrison!
Howard
Was leaning towards American Racing Headers, but if the the Vette Docs don't get back to me, I am willing to go Kooks. Looking for LT, Hi flow Cats and X pipe. Vette Docs said they would weld in the WB Bung no cost.Originally Posted by Redline Motorsports
Tommorrow I am jacking up the car and taking the stock exhaust off, Switching my Fuel Pressure Logging From AD1 to the EGR PID as TAQuick wrote up, and trying to set up the valet switch. Then while waiting for the Headers, mess with the COS5 for the Nitrous tables.
1999 C5 A-4 Convertible
1 of 245 Nassua Blue 99 Vert's, Blackwing, LS6 Intake, 42 # Injectors, Two Stage Nitrous System- Dry and a Wet Plate, EFI Live Scan/Tune V2, 1999 PCM with 2002 COS 5 OS Custom Nitrous Panel.
Maine USA
Take a look at Melrose long tubes-- They're coated and supplied with Random Tech metal cats and stainless X-pipe. The set-up was good for 37 at the wheels on my 01 six-speed. Installation is easy and fit is great. (www.melroseheaders.com)Originally Posted by Beer99C5
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